tainoxl

^Yes it is, 50k truck you cant upgrade wheels and tires cause it shakes. Not only that but if the driveline angles are that far off from factory its going to wear parts and bearing fast.

Was this ever resolved?? I just got Trail-boss Replicas in 20 x9 and am having weird drive line vibrations also. I have 2020 Lt with2" level. The problem is always there when I run 20" wheels. We tried three different tire combinations and two sets of wheels, same vibrations. Put the factory 18" wheels with 265 60 18 s and its smooth. I have an appt with the dealer but Im thinking I might be wasting my time and money with them as they are just going to tell me to put it all to stock. I do have 1.5" factory rear leaf spring blocks from my 14 silverado, wonder if using them would change the angles and fix the issue.

I just did 2" level and Trail-boss replica 20s on 33x12.5 tires , Road-force balanced, new alignment and now I have the wobble shutter feels like from rear end. Put the stock 18" with 265/65 tires and it goes away. We tried three different tire even a general grabber lt tire in 275 55 20 and same issue. I was told possible drive line issue and go see the dealer or Mechanic. Not sure how much money I want to keep throwing at this. I know dealer will cry about putting it to stock and then trouble shoot but it feels smooth with the stock 18s.

Yup, spindle and drop springs up front, flip kit and shocks in the rear.

14 Z71 4x4 Lowered on 3/5 Maxtrac kit. Wheels are 24x10 oe reps wrapped in 305x35 24. Had to trim fender liner, and rubs slightly on big bumps, otherwise runs great.

After a year and half and having listened to many different exhuast setups I have decided to go with a muffler delete. I currently have the MagnaFlow dual rear exit cat back, and though it sounds good, it is just not loud enough. I have listened to various different muffler delete setups and aside from the loud cold start they sound great to me. I will go in Thursday to replace MagnaFlow muffler for a stainless y pipe. The factory cats muffle the sound so much. I can't wait!

New to the forum, enjoy. Had my truck now for a little over a month, been a blast.

Moto Metal 970 20x9 +18 with Federal Couragias 33x12.5x20. RC 2.5 leveling lift kit.